Military looking to build autonomous, bunker-busting killbot

We remember hearing something in the 1990s about SDI (or "Star Wars") actually being a tool to fight UFOs, and that places like Area 51 contained vast underground bases positively teeming with ETs. We didn't think much of it then, and neither do we now -- although this request for information posted over on the FBO website has given us pause. The query is officially for info regarding "robotic underground munition technology," meaning that Defense Threat Reduction Agency would really, really like to get its hands on an autonomous bunker-busting robot capable of being dropped on a target and digging into (and then blowin' up) whatever it is that lies beneath the ground. Features specified include: a survivable underground communication system, capabilities to efficiently overcome natural and man-made obstacles, viable passive and active defensive and offensive systems, vehicle control logic to avoid, traverse, neutralize or defeat natural and man-made obstacles, and more. One one hand, this does sound like a bit of "war on terror" overkill, but again we don't really expect the federal government to throw tons of money at a grandiose and over-expense project that will never come to fruition. We'll be keeping a close eye on this one.